/*
  Simple DirectMedia Layer
  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"

#if SDL_VIDEO_DRIVER_OHOS

/* Ohos SDL video driver implementation */

#include "SDL_video.h"
#include "SDL_mouse.h"
#include "SDL_hints.h"
#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"
#include "../../events/SDL_windowevents_c.h"

#include "SDL_ohosvideo.h"
#include "SDL_ohosgl.h"
#include "SDL_ohosclipboard.h"
#include "SDL_ohosevents.h"
#include "SDL_ohoskeyboard.h"
#include "SDL_ohosmouse.h"
#include "SDL_ohostouch.h"
#include "SDL_ohoswindow.h"
#include "SDL_ohosvulkan.h"

#define OHOS_VID_DRIVER_NAME "Ohos"

/* Initialization/Query functions */
static int Ohos_VideoInit(_THIS);
static void Ohos_VideoQuit(_THIS);
int Ohos_GetDisplayDPI(_THIS, SDL_VideoDisplay *display, float *ddpi, float *hdpi, float *vdpi);

#include "../SDL_egl_c.h"
#define Ohos_GLES_GetProcAddress SDL_EGL_GetProcAddress
#define Ohos_GLES_UnloadLibrary SDL_EGL_UnloadLibrary
#define Ohos_GLES_SetSwapInterval SDL_EGL_SetSwapInterval
#define Ohos_GLES_GetSwapInterval SDL_EGL_GetSwapInterval
#define Ohos_GLES_DeleteContext SDL_EGL_DeleteContext

/* Ohos driver bootstrap functions */


/* These are filled in with real values in Ohos_SetScreenResolution on init (before SDL_main()) */
int Ohos_SurfaceWidth           = 0;
int Ohos_SurfaceHeight          = 0;
static int Ohos_DeviceWidth     = 0;
static int Ohos_DeviceHeight    = 0;
static Uint32 Ohos_ScreenFormat = SDL_PIXELFORMAT_UNKNOWN;
static int Ohos_ScreenRate      = 0;
SDL_sem *Ohos_PauseSem          = NULL;
SDL_sem *Ohos_ResumeSem         = NULL;
SDL_mutex *Ohos_ActivityMutex   = NULL;

static int
Ohos_Available(void)
{
    return 1;
}

static void
Ohos_SuspendScreenSaver(_THIS)
{
    Ohos_JNI_SuspendScreenSaver(_this->suspend_screensaver);
}

static void
Ohos_DeleteDevice(SDL_VideoDevice *device)
{
    SDL_free(device->driverdata);
    SDL_free(device);
}

static SDL_VideoDevice *
Ohos_CreateDevice(int devindex)
{
    SDL_VideoDevice *device;
    SDL_VideoData *data;
    SDL_bool block_on_pause;

    /* Initialize all variables that we clean on shutdown */
    device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
    if (!device) {
        SDL_OutOfMemory();
        return NULL;
    }

    data = (SDL_VideoData *) SDL_calloc(1, sizeof(SDL_VideoData));
    if (!data) {
        SDL_OutOfMemory();
        SDL_free(device);
        return NULL;
    }

    device->driverdata = data;

    /* Set the function pointers */
    device->VideoInit = Ohos_VideoInit;
    device->VideoQuit = Ohos_VideoQuit;
    block_on_pause = SDL_GetHintBoolean(SDL_HINT_OHOS_BLOCK_ON_PAUSE, SDL_TRUE);
    if (block_on_pause) {
        device->PumpEvents = Ohos_PumpEvents_Blocking;
    } else {
        device->PumpEvents = Ohos_PumpEvents_NonBlocking;
    }

    device->GetDisplayDPI = Ohos_GetDisplayDPI;

    device->CreateSDLWindow = Ohos_CreateWindow;
    device->SetWindowTitle = Ohos_SetWindowTitle;
    device->SetWindowFullscreen = Ohos_SetWindowFullscreen;
    device->MinimizeWindow = Ohos_MinimizeWindow;
    device->DestroyWindow = Ohos_DestroyWindow;
    device->GetWindowWMInfo = Ohos_GetWindowWMInfo;

    device->free = Ohos_DeleteDevice;

    /* GL pointers */
    device->GL_LoadLibrary = Ohos_GLES_LoadLibrary;
    device->GL_GetProcAddress = Ohos_GLES_GetProcAddress;
    device->GL_UnloadLibrary = Ohos_GLES_UnloadLibrary;
    device->GL_CreateContext = Ohos_GLES_CreateContext;
    device->GL_MakeCurrent = Ohos_GLES_MakeCurrent;
    device->GL_SetSwapInterval = Ohos_GLES_SetSwapInterval;
    device->GL_GetSwapInterval = Ohos_GLES_GetSwapInterval;
    device->GL_SwapWindow = Ohos_GLES_SwapWindow;
    device->GL_DeleteContext = Ohos_GLES_DeleteContext;

#if SDL_VIDEO_VULKAN
    device->Vulkan_LoadLibrary = Ohos_Vulkan_LoadLibrary;
    device->Vulkan_UnloadLibrary = Ohos_Vulkan_UnloadLibrary;
    device->Vulkan_GetInstanceExtensions = Ohos_Vulkan_GetInstanceExtensions;
    device->Vulkan_CreateSurface = Ohos_Vulkan_CreateSurface;
#endif

    /* Screensaver */
    device->SuspendScreenSaver = Ohos_SuspendScreenSaver;

    /* Text input */
    device->StartTextInput = Ohos_StartTextInput;
    device->StopTextInput = Ohos_StopTextInput;
    device->SetTextInputRect = Ohos_SetTextInputRect;

    /* Screen keyboard */
    device->HasScreenKeyboardSupport = Ohos_HasScreenKeyboardSupport;
    device->IsScreenKeyboardShown = Ohos_IsScreenKeyboardShown;

    /* Clipboard */
    device->SetClipboardText = Ohos_SetClipboardText;
    device->GetClipboardText = Ohos_GetClipboardText;
    device->HasClipboardText = Ohos_HasClipboardText;

    return device;
}

VideoBootStrap Ohos_bootstrap = {
    OHOS_VID_DRIVER_NAME, "SDL Ohos video driver",
    Ohos_Available, Ohos_CreateDevice
};


int
Ohos_VideoInit(_THIS)
{
    SDL_VideoData *videodata = (SDL_VideoData *)_this->driverdata;
    int display_index;
    SDL_VideoDisplay *display;
    SDL_DisplayMode mode;

    videodata->isPaused  = SDL_FALSE;
    videodata->isPausing = SDL_FALSE;

    mode.format          = Ohos_ScreenFormat;
    mode.w               = Ohos_DeviceWidth;
    mode.h               = Ohos_DeviceHeight;
    mode.refresh_rate    = Ohos_ScreenRate;
    mode.driverdata      = NULL;

    display_index = SDL_AddBasicVideoDisplay(&mode);
    if (display_index < 0) {
        return -1;
    }
    display = SDL_GetDisplay(display_index);
    display->orientation = Ohos_JNI_GetDisplayOrientation();    

    SDL_AddDisplayMode(&_this->displays[0], &mode);

    Ohos_InitKeyboard();

    Ohos_InitTouch();

    Ohos_InitMouse();

    /* We're done! */
    return 0;
}

void
Ohos_VideoQuit(_THIS)
{
    Ohos_QuitMouse();
    Ohos_QuitTouch();
}

int
Ohos_GetDisplayDPI(_THIS, SDL_VideoDisplay *display, float *ddpi, float *hdpi, float *vdpi)
{
    return Ohos_JNI_GetDisplayDPI(ddpi, hdpi, vdpi);
}

void
Ohos_SetScreenResolution(int surfaceWidth, int surfaceHeight, int deviceWidth, int deviceHeight, Uint32 format, float rate)
{
    Ohos_SurfaceWidth  = surfaceWidth;
    Ohos_SurfaceHeight = surfaceHeight;
    Ohos_DeviceWidth   = deviceWidth;
    Ohos_DeviceHeight  = deviceHeight;
    Ohos_ScreenFormat  = format;
    Ohos_ScreenRate    = (int)rate;
}

void Ohos_SendResize(SDL_Window *window)
{
    /*
      Update the resolution of the desktop mode, so that the window
      can be properly resized. The screen resolution change can for
      example happen when the Activity enters or exits immersive mode,
      which can happen after VideoInit().
    */
    SDL_VideoDevice *device = SDL_GetVideoDevice();
    if (device && device->num_displays > 0)
    {
        SDL_VideoDisplay *display          = &device->displays[0];
        display->desktop_mode.format       = Ohos_ScreenFormat;
        display->desktop_mode.w            = Ohos_DeviceWidth;
        display->desktop_mode.h            = Ohos_DeviceHeight;
        display->desktop_mode.refresh_rate = Ohos_ScreenRate;
    }

    if (window) {
        /* Force the current mode to match the resize otherwise the SDL_WINDOWEVENT_RESTORED event
         * will fall back to the old mode */
        SDL_VideoDisplay *display              = SDL_GetDisplayForWindow(window);
        display->display_modes[0].format       = Ohos_ScreenFormat;
        display->display_modes[0].w            = Ohos_DeviceWidth;
        display->display_modes[0].h            = Ohos_DeviceHeight;
        display->display_modes[0].refresh_rate = Ohos_ScreenRate;
        display->current_mode                  = display->display_modes[0];

        SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, Ohos_SurfaceWidth, Ohos_SurfaceHeight);
    }
}

#endif /* SDL_VIDEO_DRIVER_OHOS */

/* vi: set ts=4 sw=4 expandtab: */
